Improvement in rotary puddling, melting, and heating furnaces



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Rotary Puddling, Melting, and Heating Furnacas.

N0. 142,152. Patented August26,18'7 3.

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Rotary Puddling. Melting, and Heating Furnaces. No. 142,152,PatentedAugust26,l873.

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s. DANK S. Rotary Puddling Melting, and Heating Furnaces; No. 142,152,PatentedAugust26,1873.

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Rotary Puddling, Melting, and Heating Furnaces.

Patented August 26 187'.

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AM. PHDTOi/THMRAFHIL CaM X/assaR/vz's P1700555) SAMUEL nANxs, orCINCINNATI, onro.

IMPROVEMENT IN ROTARY PUDDLI'NGI IlIELTING, AND HEATING FURNACES. I

Specification forming 'part of Letters Patent No. 142,] 52;, datedAugust 26, 1873; application filed 1 May 1, 1873.

To all whom it may concern:

Be it known that I, SAMUEL DANKS, of Gincinnati, Ohio, have inventedcertain Improvements in Rotary Puddling, Melting, and Heating Furnaces,and in the apparatus to be employed in connection with the same, ofwhich the following is a specification:

My said invention relates to improvements in the construction of therotary paddling,

melting, and heating furnaces described in the specifications of formerLetters Patent heretofore granted to me, and to apparatus employed inconnection with the said furnaces.

Figure l is a plan, partly in section, of my improved paddling-furnace.Fig. 2 is alongitudinal verticalsection on the line 00 00, Fig. 1. Fig.8 is a transverse vertical section on the lines g y and z c, Fig. 1.Fig. 4 is a front elevation of the said furnace. Fig. 4 is a section ofthe end of the revolving cylinder, showing modifications in itsconstruction. Figs. 5 and 6 show forks for manipulating the balls andblooms, as hereinafter described.

Likeletters indicate the same parts throughout the drawings.

a is the grate or fire-chamber, which communicates by the aperture awith the revolving cylinder or. chamber 12, which forms thepaddling-chamber or refinery. At the lower side of the said aperture isthe bridge 0,-which is provided with pipes 0, through which water orother cooling fluid is conducted. The said revolving cylinder may beformed of either wrought or cast iron, and its body or circular portionmay be made in one piece, with ends of either wrought or cast ironsecured thereon; but I prefer that, the said cylinder should be formedof a number of staves. or plates, b properly fitted together, as shownin the drawing, and riveted or bolted at the ends to rings or lioops b bof wrought or cast iron. These rings and the ends b may be cast in onepiece, as shown in Fig. 2, or the ends I) may be of wrought-iron rivetedon the said rings, as shown in Fig. 4:. I cast upon or in one piece withthe said staves the hollow ribs b which serve to hold the felting orlining. Inside each of these hollow ribs I place a bar, b ,-ofwrought-iron, whose ends are. dovetailed and secured by casting them inthe stave. These wrought iron bars strengthen the staves,

and retain them in place if they should be fractured. WVhen the body ofthe cylinder is cast or formed in one piece, I form in the samelongitudinal apertures, or slots, in which I place the hollow ribs b thesame being secured in the said slots by bolts or rivets, or the saidhollow ribs may be cast in the cylinder. I sometimes use a fixed casing,surrounding the revolving cylinder, to form an air or water chamber forcooling the said cylinder. The ring or hoop b has cast or fixed on itthe toothed wheel 01, whereby the cylinder is rotated. If the wheel isnot cast upon the saidring, the latter is formed with a flange orcollar,to which the wheel is attached by bolts or otherwise. The said wheelgears with the pinion d on the shaft 6?, which is driven by asteam-engine or other motor. Both of these rings b or hoops have aninclined flange to hold the cylinder-ends b, which are made of wroughtor cast iron, pressed or otherwise worked into the proper shape, andeach end is preferably made of one plate or sheet of iron. These endsare somewhat of a dished form, as shown-that is to say, they have aninclined or sloping portionwhereby they are secured to the flanges ofthe rings, and a fiat portion square or perpendicular to the cylindersaxis, and to this flat portion I attach facing or abrasion rings c, madeof either wrought or cast iron. To the inside of the end pieces I securechannel-pieces f, of angle or other iron, to hold the lining or felting.The removable or shiftable piece 9 is suspended by rods 9 to rollers onan overhead track, or is otherwise supported, in such a manner as topermit its adjustment to be conveniently effected. In combination withthe abrasion-rin gs e on the cylinder ends, I arrange fixedabrasion-rings h and i on the shiftable or movable piece 9 and on thebridge 0. The abrasion-rings on the cylinder are fitted to turn freelyagainst the faces of the said I fer to arrange the water pipe or channel1 to conduct the water down on both sides of the rings; and I alsoprefer to divide the latter, either at the top or bottom, or both, intotwo portions to prevent their fracture by unequal expansion. I alsoarrange perforated pipes or other similar contrivances to throw jets ofwater upon the cylinder ends b to keep them and their lining cool. 1

The upper part of the shiftable piece is lined internally withfire-bricks 9 as shown, but the lower portion of the said piece isexposed to the action of the molten metal, which some times flows intothe same from the cylinder. It must, therefore, be lined or felted withthe compound described in the-specification of my patent of 1867 and Iprovide the interior of the said shiftable or removable piece with ashelf, on each side. These shelves carry the internal brick-work g andpermit the lower part of the said piece to be suitably lined or felted,and this lining to be readily repaired or renewed when required. Theouter end of the piece g is provided with a chamber, 9 for the passageof air, water, steam, or other fluid to protect it from the heat. g is astopper-hole, which permits the inspection or manipulation of the metalin the furnace. The aforesaid movable or shiftable piece 9 is supportedby props j it against the cylinderb and the stationary part g of theflue in such a manner as to allow of its adjustment to compensate forthe wear of the aforesaid abrasion-rings or other parts, and theexpansion and contraction of the cylinder, while it permits the readyremoval or adjustment of the said piece 9 to one side of the cylinder.These props are rods or bars of iron, or other suitable metal. The propj rests against the front and the prop it against the sides of saidpiece, as shown in Fig. 4. At their upper end they rest against studs orprojections on the said shiftable piece. At their lower ends they havejaws, which take hold of pins on the side of the ratchet-wheels l. Thelatter are supported in blocks 0, firmly bolted down upon the floor orfoundation, and are provided with pawls l which allow them to turn onlyin one direction. I prefer to use double ratchet-wheels, with the teethof one alternating with those of the other. By turning theseratchet-wheels the props j 70 are made to press forcibly against theshiftable piece 9, which is thereby forced into close contact with thecylinder, as shown in Fig. 4. It may be released therefrom, whenrequired, by raising the pawls and turning back the ratchet-wheels toallow the piece g to be moved away from the cylinders mouth, as shown indotted lines inthe same figure. Instead of ratchet-wheels and pawls Imay use eccentrics, screws, or other similar contrivances, for adjustingthe props. The said shiftablepiece, as above stated, is suspended bychains or rods from a crane or over-head track, and is moved to or awayfrom the cylinder and flue by a handle or winch, through the medium of arack and pinion, or other suitable apparatus. The pipes g 9 whichconduct the water to and away from the shiftable piece g, are jointed toallow them to follow the said piece in its adjustment. Flexible hose maybe used to connect the pipes. The revolving cylinder or chamber issupported upon rollers, which are carried in blocks or brackets m,secured to the foundation or fioor. I prefer to have a separate block orbracket for each roller, so that the rollers or blocks may be readilyadjusted to compensate for wear, and the cylinder thus be convenientlymaintained in its proper position.

I prefer that the cylinder of each furnace should be driven by aseparate double-crank engine, to permit the speed to be convenientlyvaried, as required, and also to permit the motion of the said cylinderto be readily reversed. The employment of a separate engine permits theattainment of these objects much more advantageously than if a number ofcylinders were connected to a single large engine, which wouldnecessitate a complicated and costly arrangement of gearing.

I claim-- 1. The cylinder of a rotating puddling, heating, or meltingfurnace, constructed of separate staves b with hollow ribs andwroughtiron bars cast in the said ribs, substantially as herein setforth, for the purpose specified.

2. The end rings 0 for securing the said staves, constructed in onepiece with the end plates 1), as shown in Fig. 2, or secured to the saidend plates by bolts or rivets, as shown in Fig. r, for the purposespecified.

3. The fixed rings 6 h i, Fig. 2, in combination with the channel forkeeping them constantly supplied with water or other cooling fluid,substantially as herein set forth.

4. The fire-brick, or its equivalent, and the lining or feltingcompound, described herein, for protecting the interior of the shiftablepiece g, in combination with the shelves 9 in the interior of saidshiftable piece, for the purposes described.

5. The adjustable props), or their equivalents, constructed to be usedin combination with the said shiftable piece, substantially as hereinset forth, for the purpose specified.

6. In combination with the rotating cylinder 1), the adjustable blocksor brackets m carrying the rollers, substantially as herein setforth,for the purpose specified.

SAMUEL DANKS.

Witnesses:

O. E. LAMorrrE, JEREMIAH F. TWoHIG.

